ryanjon2040

void UYourGameInstance::CheckIfServerIsOnline(FString ServerIP, FString ServerPort)
{
	/* First bind our OnServerCheckFinished function to PingResult.
	* When we get any reply from UDP server PingResult will be called
	* and when PingResult is called the binded method (OnServerCheckFinished) is also called. */
	PingReult.BindUObject(this, &UYourGameInstance::OnServerCheckFinished);

	/* Our UDP server ip (public ip) and port we have to ping.
	* Port should be the exact same port we defined on UDP server node.js file on EC2 server */
	const FString Address = FString::Printf(TEXT("%s:%d"), *ServerIP, ServerPort);

ryanjon2040

#include "Icmp.h"

/* Delegate to bind our custom function when we receive a reply from our EC2 UDP server */
FIcmpEchoResultDelegate PingReult;

/* Sends a UDP echo to the given server and waits for a reply */
UFUNCTION(BlueprintCallable)
void CheckIfServerIsOnline(FString ServerPublicIP, FString ServerPort);

/* Delegate called when we get a reply from our EC2 UDP server */

ryanjon2040

// port to listen to
var PORT = xxxxx; // Change to your port number

// x's should be replaced with your EC2 private ip
var HOST = 'ip-xxx-xx-xx-xxx.your-region.compute.internal';

// Load datagram module
var dgram = require('dgram');

// Create a new instance of dgram socket